diff --git a/exercises/pangram/pangram_test.rb b/exercises/pangram/pangram_test.rb
index c796d4b887..cfb2334796 100755
--- a/exercises/pangram/pangram_test.rb
+++ b/exercises/pangram/pangram_test.rb
@@ -19,6 +19,16 @@ def test_pangram_with_only_lower_case
     assert Pangram.is_pangram?(str)
   end
 
+  def test_pangram_with_underscore_character
+    str = 'the quick brown_fox jumps over the lazy dog'
+    assert Pangram.is_pangram?(str)
+  end
+
+  def test_pangram_with_sentence_containing_numbers
+    str = 'the qu1ck br0wn fox jumps over the lazy dog'
+    refute Pangram.is_pangram?(str)
+  end
+
   def test_missing_character_x
     skip
     str = 'a quick movement of the enemy will jeopardize five gunboats'